Crossword clues for the word: INFILTRATE The word INFILTRATE has appeared as an answer to at least 3 crossword clues on different crossword puzzles. Crossword clues for INFILTRATE Showing 1 to 3 of 3 results Clue(s) Do secret-agent work Gain entrance or access surreptitiously Sneak into enemy camp and learn if it's prepared to accept end to conflict